Paul first meets three-year-old Angel, who is a regular visitor to Eagle Ward, Great Ormond Street Hospital's kidney centre, as she needs dialysis while she waits for a new kidney. He also meets 11-year-old George, who had life-saving open heart surgery at GOSH when he was just eight, and since then comes back twice a year for a series of critical cardiology tests to find out whether his condition has deteriorated.
